In my company, we use Google Calendar and we add a lot of events, all day, some of them we forget to confirm. In KOrganizer there is not a option to show unconfirmed events.
STEPS TO REPRODUCE
1. Open a calendar with a unconfirmed event
The unconfirmed event will not appear
Show the unconfirmed event, like appears in the Google Calendar.
Linux/KDE Plasma: Arch Linux
KDE Plasma Version: 5.21.3
KDE Frameworks Version: 5.80.0
Qt Version: 5.15.2